IPC messages delivered to the wrong frame

Overview

IPC messages sent from the main process to a subframe in the renderer process, through webContents.sendToFrame, event.reply or when using the remote module, can in some cases be delivered to the wrong frame.

If your app does ANY of the following, then it is impacted by this issue:

• Uses remote
• Calls webContents.sendToFrame
• Calls event.reply in an IPC message handler

Recommendation

Upgrade to a fixed version or later: 9.4.0, 10.2.0, 11.1.0, or 12.0.0-beta.9

References

• GitHub Advisory
• CVE